ATOSSA THERAPEUTICS, INC. - ATOS
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC | History | Added to | 6,147,838 | 3,627 | 0.0% | 0.0% | 1 | +68,994 | 1.13% | Q4 2025 | Jan 29, 2026 |
| AMERIPRISE FINANCIAL INC | History | Added to | 3,791,061 | 2,236 | 0.0% | 0.0% | 2 | +839,556 | 28.45% | Q4 2025 | Feb 17, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Added to | 2,062,838 | 1,217 | 0.0% | 0.0% | 3 | +514,175 | 33.2% | Q4 2025 | Feb 12, 2026 |
| BlackRock, Inc. | History | No change | 1,997,627 | 1,178 | 0.0% | 0.0% | 4 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 1,371,909 | 809 | 0.0% | 0.0% | 5 | +9,627 | 0.71% | Q4 2025 | Feb 09, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Reduced | 1,242,868 | 733 | 0.0% | 0.0% | 6 | -425,780 | -25.52% | Q4 2025 | Feb 17, 2026 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | History | New | 1,048,289 | 618 | 0.0% | — | 7 | +1,048,289 | New | Q4 2025 | Feb 13, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 765,715 | 451 | 0.0% | 0.0% | 8 | +443,446 | 137.6% | Q4 2025 | Feb 17, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Added to | 621,087 | 366 | 0.0% | 0.0% | 9 | +337,385 | 118.92% | Q4 2025 | Feb 17, 2026 |
| STATE STREET CORP | History | Added to | 596,485 | 351 | 0.0% | 0.0% | 10 | +141,990 | 31.24% | Q4 2025 | Feb 13, 2026 |
| UBS Group AG | History | Added to | 390,008 | 230 | 0.0% | 0.0% | 11 | +129,286 | 49.59% | Q4 2025 | Jan 29, 2026 |
| NORTHERN TRUST CORP | History | Added to | 288,399 | 170 | 0.0% | 0.0% | 12 | +25,022 | 9.5% | Q4 2025 | Feb 17, 2026 |
| JANE STREET GROUP, LLC | History | Added to | 286,498 | 169 | 0.0% | 0.0% | 13 | +124,070 | 76.38% | Q4 2025 | Feb 12, 2026 |
| Connor, Clark & Lunn Investment Management Ltd. | History | Added to | 266,010 | 156 | 0.0% | 0.0% | 14 | +17,396 | 7.0% | Q4 2025 | Feb 10, 2026 |
| Graham Capital Management, L.P. | History | Added to | 211,369 | 124 | 0.0% | 0.0% | 15 | +45,923 | 27.76% | Q4 2025 | Feb 17, 2026 |
| XTX Topco Ltd | History | Added to | 169,261 | 99 | 0.0% | 0.0% | 16 | +144,412 | 581.16% | Q4 2025 | Feb 17, 2026 |
| SIMPLEX TRADING, LLC | History | Added to | 87,300 | 51 | 0.0% | 0.0% | 17 | +80,678 | 1218.33% | Q4 2025 | Feb 11, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | No change | 80,000 | 47 | 0.0% | 0.0% | 18 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | Reduced | 79,414 | 46 | 0.0% | 0.0% | 19 | -17,873 | -18.37% | Q4 2025 | Feb 10, 2026 |
| GROUP ONE TRADING LLC | History | Reduced | 73,962 | 43 | 0.0% | 0.0% | 20 | -94,838 | -56.18% | Q4 2025 | Feb 12, 2026 |
| Qube Research & Technologies Ltd | History | Reduced | 72,802 | 42 | 0.0% | 0.0% | 21 | -65,841 | -47.49% | Q4 2025 | Feb 17, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Reduced | 67,654 | 39 | 0.0% | 0.0% | 22 | -87,515 | -56.4% | Q4 2025 | Feb 17, 2026 |
| MORGAN STANLEY | History | Reduced | 61,500 | 36 | 0.0% | 0.0% | 23 | -50,848 | -45.26% | Q4 2025 | Feb 13, 2026 |
| Point72 Asset Management, L.P. | History | New | 48,092 | 28 | 0.0% | — | 24 | +48,092 | New | Q4 2025 | Feb 17, 2026 |
| &PARTNERS | History | New | 43,000 | 25 | 0.0% | — | 25 | +43,000 | New | Q4 2025 | Feb 17, 2026 |
| JPMORGAN CHASE & CO | History | Reduced | 38,067 | 22 | 0.0% | 0.0% | 26 | -148 | -0.39% | Q4 2025 | Feb 11, 2026 |
| LPL Financial LLC | History | Added to | 29,469 | 17 | 0.0% | 0.0% | 28 | +913 | 3.2% | Q4 2025 | Feb 11, 2026 |
| REGIONS FINANCIAL CORP | History | No change | 30,000 | 17 | 0.0% | 0.0% | 27 | 0 | 0.0% | Q4 2025 | Jan 27, 2026 |
| MARSHALL WACE, LLP | History | Reduced | 28,072 | 16 | 0.0% | 0.0% | 29 | -57,004 | -67.0% | Q4 2025 | Feb 13, 2026 |
| R Squared Ltd | History | New | 28,099 | 16 | 0.01% | — | 30 | +28,099 | New | Q4 2025 | Jan 30, 2026 |
| TWO SIGMA SECURITIES, LLC | History | New | 24,508 | 14 | 0.0% | — | 32 | +24,508 | New | Q4 2025 | Feb 17, 2026 |
| Sigma Planning Corp | History | No change | 24,000 | 14 | 0.0% | 0.0% | 31 | 0 | 0.0% | Q4 2025 | Jan 30, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | New | 23,452 | 13 | 0.0% | — | 33 | +23,452 | New | Q4 2025 | Feb 17, 2026 |
| PFG Investments, LLC | History | Added to | 21,750 | 12 | 0.0% | 0.0% | 35 | +500 | 2.35% | Q4 2025 | Jan 26, 2026 |
| LVM CAPITAL MANAGEMENT LTD/MI | History | No change | 21,000 | 12 | 0.0% | 0.0% | 34 | 0 | 0.0% | Q4 2025 | Jan 12, 2026 |
| StoneX Group Inc. | History | New | 19,871 | 11 | 0.0% | — | 36 | +19,871 | New | Q4 2025 | Feb 12, 2026 |
| TWO SIGMA ADVISERS, LP | History | New | 18,300 | 10 | 0.0% | — | 38 | +18,300 | New | Q4 2025 | Feb 17, 2026 |
| GREENBERG FINANCIAL GROUP | History | New | 18,216 | 10 | 0.0% | — | 37 | +18,216 | New | Q4 2025 | Jan 22, 2026 |
| DnB Asset Management AS | History | No change | 15,600 | 9 | 0.0% | 0.0% | 39 | 0 | 0.0% | Q4 2025 | Feb 05, 2026 |
| Baader Bank Aktiengesellschaft | History | New | 21,364 | 7 | 0.0% | — | 40 | +21,364 | New | Q4 2025 | Feb 05, 2026 |
| RAYMOND JAMES FINANCIAL INC | History | Added to | 11,323 | 6 | 0.0% | 0.0% | 41 | +508 | 4.7% | Q4 2025 | Feb 18, 2026 |
| Focus Financial Network, Inc. | History | Added to | 10,350 | 6 | 0.0% | 0.0% | 45 | +200 | 1.97% | Q4 2025 | Jan 12, 2026 |
| Janney Montgomery Scott LLC | History | No change | 10,000 | 6 | 0.0% | 0.0% | 42 | 0 | 0.0% | Q4 2025 | Feb 11, 2026 |
| Bank of New York Mellon Corp | History | No change | 11,147 | 6 | 0.0% | 0.0% | 43 | 0 | 0.0% | Q4 2025 | Feb 10, 2026 |
| J. L. Bainbridge & Co., Inc. | History | No change | 11,121 | 6 | 0.0% | 0.0% | 44 | 0 | 0.0% | Q4 2025 | Jan 14, 2026 |
| OSAIC HOLDINGS, INC. | History | No change | 8,847 | 5 | 0.0% | 0.0% | 46 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| FMR LLC | History | No change | 7,365 | 4 | 0.0% | 0.0% | 47 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Tower Research Capital LLC (TRC) | History | Added to | 3,999 | 2 | 0.0% | 0.0% | 48 | +1,483 | 58.94% | Q4 2025 | Feb 17, 2026 |
| NewEdge Advisors, LLC | History | No change | 5,000 | 2 | 0.0% | 0.0% | 49 | 0 | 0.0% | Q4 2025 | Feb 18, 2026 |
| Rockefeller Capital Management L.P. | History | No change | 5,000 | 2 | 0.0% | 0.0% | 50 | 0 | 0.0% | Q4 2025 | Mar 16, 2026 |
| ROYAL BANK OF CANADA | History | New | 943 | 1 | 0.0% | — | 52 | +943 | New | Q4 2025 | Feb 17, 2026 |
| HUNTINGTON NATIONAL BANK | History | No change | 3,000 | 1 | 0.0% | 0.0% | 51 | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| GSA CAPITAL PARTNERS LLP | History | Closed out | 0 | 0 | — | 0.02% | — | -310,754 | -100.0% | Q3 2025 | Nov 07, 2025 |
| Squarepoint Ops LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -253,343 | -100.0% | Q3 2025 | Nov 14, 2025 |
| COMMONWEALTH EQUITY SERVICES, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -46,001 | -100.0% | Q3 2025 | Oct 22, 2025 |
| Gallagher Capital Advisors, LLC | History | Closed out | 0 | 0 | — | 0.02% | — | -31,575 | -100.0% | Q3 2025 | Nov 06, 2025 |
| HRT FINANCIAL LP | History | Closed out | 0 | 0 | — | 0.0% | — | -16,932 | -100.0% | Q3 2025 | Nov 14, 2025 |
| NorthRock Partners, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -16,750 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Jain Global LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -16,707 | -100.0% | Q3 2025 | Nov 14, 2025 |
| VICTORY CAPITAL MANAGEMENT INC | History | Closed out | 0 | 0 | — | 0.0% | — | -14,864 | -100.0% | Q3 2025 | Nov 12, 2025 |
| Optiver Holding B.V. | History | New | 838 | 0 | — | — | — | +838 | New | Q4 2025 | Feb 17, 2026 |
| Allworth Financial LP | History | New | 702 | 0 | — | — | — | +702 | New | Q4 2025 | Feb 05, 2026 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | History | New | 500 | 0 | — | — | — | +500 | New | Q4 2025 | Feb 10, 2026 |
| CWM, LLC | History | Reduced | 50 | 0 | — | — | — | -175 | -77.78% | Q4 2025 | Jan 26, 2026 |
| HARBOUR INVESTMENTS, INC. | History | Reduced | 1,656 | 0 | — | 0.0% | — | -55 | -3.21% | Q4 2025 | Feb 09, 2026 |
| True Wealth Design, LLC | History | Closed out | 0 | 0 | — | — | — | -29 | -100.0% | Q3 2025 | Oct 21, 2025 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 1,497 | 0 | — | 0.0% | — | +7 | 0.47% | Q4 2025 | Feb 10, 2026 |
| EverSource Wealth Advisors, LLC | History | Closed out | 0 | 0 | — | — | — | -2 | -100.0% | Q3 2025 | Nov 10, 2025 |
| SBI Securities Co., Ltd. | History | Reduced | 1,565 | 0 | — | 0.0% | — | -1 | -0.06% | Q4 2025 | Feb 03, 2026 |
| WELLS FARGO & COMPANY/MN | History | No change | 83 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| NBC SECURITIES, INC. | History | No change | 150 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| JONES FINANCIAL COMPANIES LLLP | History | No change | 700 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Clearstead Advisors, LLC | History | No change | 70 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| NISA INVESTMENT ADVISORS, LLC | History | No change | 350 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Jan 15, 2026 |
| HANTZ FINANCIAL SERVICES, INC. | History | No change | 82 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| Arax Advisory Partners | History | No change | 42 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| TD Waterhouse Canada Inc. | History | No change | 1,555 | 0 | — | 0.0% | — | 0 | 0.0% | Q4 2025 | Jan 27, 2026 |